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Author Topic: Portable 2m yagi  (Read 1673 times)
KK4IKO
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Posts: 67




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« on: May 15, 2012, 06:44:45 PM »

In the June issue of QST, there is a simple and neat-looking homemade portable Yagi for 2m handhelds.  I have two questions:  Will it take 20 to 50 watts from a regular radio, and is there any reason the 1x2 wood support cannot be made from 1" rigid PVC pipe?

73

KK4IKO
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K5LXP
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Posts: 4448


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« Reply #1 on: May 15, 2012, 07:54:21 PM »

That's just a copy of the WA5VJB "Cheap Yagi".  It would easily handle 100W, or more.  PVC would work fine as a boom.


Mark K5LXP
Albuquerque, NM
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WB6BYU
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Posts: 13027




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« Reply #2 on: May 15, 2012, 08:15:27 PM »

Here is the original article from WA5VJD:

http://www.wa5vjb.com/yagi-pdf/cheapyagi.pdf

I've built them using 1/2" thinwall PVC pipe out to 6 elements or so using #8 aluminum
"ground wire" (which may be discontinued at Radio Shack now) for the parasitic
elements and #12 or #14 copper for the driven element.  Rotate the driven element
about it's axis so the short end is in front of the rest of the driven element rather than
below it.  You can pull all the parasitic elements out of the boom and slip them inside
the pipe to make a small package.  If the feedlline is connected to the driven element
on the same side of the boom as the bend then you can also slip the driven element out
of the boom and store the whole thing in a long skinny bag (though it won't slip inside
the boom unless you use a much larger size of pipe.)

I've built these from 121.5 MHz to 732 MHz with good results.
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